Capstan.



R. E. CHOATE. CAPS TAN. APPLICATION FILED APR. 29, 19 14.

1294,40. Patented Nov. 14, 1916.

ROY E. GHOATE, OF CEDAR-RAPIDS; IOWA.

OAPSTAN.

Specification of Letters Patent ii-P t te Nov g 1 1g Application filed Apri1'29, 1914.. Serial No. 835,304.. 1

To all whom it may concern Be it known that I, 'RovE. OHoA'rn, a citizen of the United States, residing at Cedar Rapids, in thecounty of Linn, State of Iowa, have invented certain new and useful Improvements in Capstans; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a capstan.

An object of the invention is to provide a device of this character wherein the operating mechanism for actuating the spool may be thrown out of engagement with the said spool to facilitate the operation of the device.

A further object of the invention is to provide means for automatically oiling the said spool. I

With these and other ob ects in view, my I invention consists in the combination and arrangement of parts as herein set forth and subsequently claimed. 7

Referring to the drawing: Figure 1 is a side elevation ofmy device. Fig. 2 is a vertical sectional view thereof. Fig. 3 'is ahorizontal sect1on.- Fig. 4 is an enlarged View of the-oiling mechanism. Fig. 5 is an enlarged perspective view, showing the clutch mechanism disengaged. Fig. c1is' a view ofthe means for disengaging the members of the clutch, the elements thereof being separated.

Referring to the drawings by reference characters wherein like parts are indicatedby like characters: My device comprises a. caslng 1 of rectangular formation and supported on a suitable base. Mounted within the c'asingl and extending vertically there-' in is a spool 3 having a cylindrical body portion 4 and an upper circular flange 5 in which an aperture 6. is formed.

' Integrally formed with the body portion 4 is a circular flange 7 On the lower central portion of this flange is a circular projection 8 which -fits into cup-shaped mem- 4 her 9 formed. on the upper end of a bearing member 10 which is held in place on the bottom of'the casing 1 by the bolts 11. This bearing member has a hole 12 extending partially through the same but in-reg1stration with a hole 13 in the flange 7. Extending upwardly in the hole 12 and held thereby by projections 14 is-a hollow cylinhole 18 therein and communicating with this hole is'a transverse hole 19 which extends through the outer surface of the bearing member 15. Through these holes grease is adapted to pass to the projection 8 and the cup 9 so that when'the spool is rotating in the said member'9 it may be effectively oiled. I

Extending upwardly through the hole 6 in the upper flange 5 of the spool and through the spool is a pipe 19 having a grease cup 20 on its upper end through which pipethe grease is adapted to be supplied to the hole 18 for the purpose above described. Formed integrally with the having formed integrally on its upper end .a. clutch section 22. Rotatably' mounted in this cylindrical member 21 and extending upwardly therefrom 1s a second cylindrical member 23 having a sweep receiving memher 24 in which is removably mounted a I sweep 25. Formed on the outer surface of .this member 23 adjacent the lower end thereof is a clutch section 26 adapted-to cooperate with the clutch section 22 on the member 21. Formed integrally with this last mentioned clutch section is a circular flange 27.;

Secured to the upper face of the casing 1 is a casting 28 having three upwardly extending projections 29, the rear portions of which are inclined as at 30, and the forward portions of which are abruptly formed, as at 31. Cooperating with this member is a second casting 32 having downwardly extending projections 33 of the reverse formation of the projections on the member 28 and adapted to cooperate therewith. Secured to this member 32 and projecting'outwardly therefrom is an operating arm 34 by which the member 32 may be rotated and by virtue of the. formation of thesaid projections on the said member and on the member 28 pushed upwardly from the said member 28 for the purpose as will hereinafter ap pear. These two members 28 and 32 just construction when it is desirable to loosen .the cable on the spool 3 this may be done by disengaging the members'of the clutch in the manner above described and the said spool may then be rotated without moving the sweep 25 or detaching the horses from the device.

Formed in the casing adjacent one lower corner thereof is a bearing 37 in which is rotatably mounted a pawl 38 which cooperates with a ratchet 39 on the outer edge of the lower flange 7 of the spool 3, which ratchet is formedof teeth in a groove 40 and which teeth lie entirely below the upper surface of the said flange 7 so that the rope which is wound upon the spool 3 will not in any way come in'contact with the said teeth and prevent the successful operation of the device. This pawl and ratchet coopcrate to normally prevent the spool from rotating in the opposite direction to which 1 the sweep is being turned.

On the side of the casing opposite to that on which the pawl is pivoted is a bracket 41 "secured to the casing by bolts 42 having an inwardlyprojecting bifurcated portion In this portion is pivoted on the bolt 43 a cam 45 which when rotated presses againsta brake shoe 46 slidably mounted on the memher 41 and operates to press the same against the periphery of the flange 7.

By providing the members 28 and 32 with three pro ections. cooperating with each other to raise the clutch portions out of enviding a three-point support described all rocking motion of the member 23 would be obviated and the said member held in its vertical position against the tendency of the sweep 25 to rock the same.

From the foregoing description it may be readilyseen that I have provided a capstan which will be automatically oiled at the portion where the spool rotates in its bearing, thus obviating the necessity of manually lifting said spool from its bearing and inserting grease thereunder.

v I have further provided a device wherein the clutch for operating the spool may be thrown out of operative position so as to allow the spool to rotate freely, and where by the portion of the device to which the sweep is attached will beheld in a vertical position and all tendency to deviate from such position will be obviated.

I do not wish to be limited to the particular construction ofmy device shown, for it is obvious that numerous mechanical changes may be made within the scope of the claim without departing from the spirit of my invention.

x What is claimed is In a device of the class described, a cas ing, a spool revolubly mounted in said casing, a flange formed on the lower end of said spool, a projection'on the lower face of saidfiange, a cup shaped bearing in which said projection is mounted, said cup shaped member having a hole extending longitudinally therethrough, a hollow cylindrical member secured in said hole and projecting upwardly through the said flange, means for holding said spool on said cylindrical member, a hole formed longitudinally insaid.

member and a transverse hole in communication therewith and in communication with the said cup shaped member to supply grease thereto, an upwardly extending pipe secured to the upper end of said cylindrical member and a grease cup attached to said ipe. I

p In testimony whereof, I afiix my signa ture, in the presence of two witnesses. 1

, ROY E. C'HOATE.

Witnesses:

W. L. CRIssMAN, M. R. ZILO. 

